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???YUSHI INSTRUMENTS，formerly the Shenyang Flaw Detector Factory, originated in 1985. As one of the professional manufactures and suppliers of NDT products in China, we own the independent intellectual property rights and honorably have the national patents for new products. we have a strong R&D team for technical support and extending new products year by year, Now they have been exported to many countries of the world and won good reputation from our domestic and foreign customers. we aim to provide our customers with reliable quality, high performance products, fast delivery, satisfactory service and competitive price.